The high-speed and intensive operation of rail vehicles may lead to new issues of high-speed collisions, which become vital to operational safety. This study analyzes high-speed train collision problems. Firstly, a wide-velocity domain collision dynamics model is established, including a three-dimensional vehicle model with 38 degrees of freedom and a fixed track model with three layers of vibration; the mathematical model characterized the non-linear factors as wheel-rail contact, front-rear contact, and coupler overload behavior are established. Then, the train collision state mark (TCSM) is proposed, which can quantitatively evaluate the safety under different collision conditions. Finally, the influences of the initial attitude and the parameters of the absorber on the collision are studied. The results show that the initial vertical height difference and nodding angle will significantly increase TCSM. TCSM will first increase and then decrease with the increase of the force level of the absorber of the leading vehicle.
Research on Safety of High-Speed Train Collision Based on Collision Dynamics
Lect.Notes Mechanical Engineering
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2023 ; Ottawa, ON, Canada August 21, 2023 - August 25, 2023
2024-11-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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